# Good Useful Formulas Plus More

This has helped me many times.

Neat Thanks … Roy

I agree thanks Roy

I couldn’t get the file open on my end.

I had no problem opening or seeing file.
Thanks again Roy useful information to have to hand

Nice.

It wouldn’t open on my iPad, no problems on the laptop. Thanks Roy!
Geeezz, I used to have all that stuff memorized:shock: now I need a cheat sheet;-)
Getting old is better than getting none!:mrgreen:

Here it is at dropbox .
I will delete this one after a week.
This one is a lot clearer. I had to reduce the other one to upload it here.

Here is a cool formula.
It will give you how many sheets of drywall you will need.
I have used this one over and over again.
The last house I used this on I only needed another 1/2 sheet.

Total square foot of home divided by the square foot of the board times 3.5

Example: 2000 ft home using 4X12 sheets . The 48 is the size of the board in sf ( i.e. 4X12=48 ) . If they were 4X8 sheets it would be 32.

2000 sf / 48 = 41.666 X 3.5 = 145.833 sheets (using 4X12 sheets)

2000 sf /32=62.5 =218.74 sheets (using 4X8 sheets)

LOL!

If you have a useful formula post it.

Thanks Roy

It been a while since I posted these.
For the new guys these can be helpful.